Bucket elevator



Aug. 25', 1931. P. s. ERIKSON 0 BUCKET ELEVATOR Fi led Feb. 24, 1930 i firrop/vfr Patented Aug. 25, 1931 PETER S. ERIKSON, OF CHIGAGO',-IL-LI1\TOIS BUCKET ELE ATOR Application filed February 24,1930. Serial No. 430,738.

This invention relates to improvements in bucket elevators and more particularly to bucket and chain attachments therefor. One object is to provide a self locking boltless wbucket and chain attachment whereby the buckets may be manually applied to or detached from the chain readily and without tools of any kind being employed. A further object is to provide a bucket elevator wherein the buckets are securely attached to the chain without marring thesmooth surface of the interior of the buckets so that no obstruction to the ready evacuation of the contents of the bucket is set up. 1 A still further object it to providea bucket elevator that is positive and efficient in operation, inexpensive to manufacture and durable in use. With the foregoing and other objects in View the invention consists in the combination and arrangement of parts to be I hereinafter fully described, pointed out in the appended claims and illustrated in the accompanying drawings which forms a part of this application for patent and in which Fig, 1 is a fragmentary view of the bucket and chain attachment in rear elevation.

Fig. 2 is a sideview of Fig. 1.

Fig. 3 is a view similar to Fig. 1 but with the chain attachment link omitted.

3 Fig. 1 is a face view of the chain attachment link of Fig. 1.

Fig. 5 is an enlarged cross sectional view on the line 5-5 of Fig. 1.

Like reference characters denote corresponding parts throughout the several views.

The present attachment can be secured to practically any of the several types of bucket elevators now in use by merely altering the bucket-carrying links slightly to receive a new type of spring plate that is spot welded to the bucket. I New attachment links can be manufactured according standard chain and buckets used with this spring plate. 7

The reference numeral 1 denotes a standard bucket and 2 a chain attachmentlink of the bucket-carrying type. -This chain attachment link is formed with the usual lat- 53 erally extending webs 3 reinforced by the to the present invention andribs 4: but each'web 3 is formed additionally upon one face with two oppositely disposed v spaced portions or blocks 5,6, the relatively outer lateral edges of each block portion being bevelled inwardly as at 7, as shown in Fig. 2, and the adjacent lateral edges 8 being straight, non-bevelled, and each formed at one end withan inwardly'eXtending heel 9 of reduced thickness relative to the integral block portions, disposed directly opposite each other and spaced apart. The heels 9 formed upon one pair of blocks 5, 6 are disposed at the relatively remote corners the corresponding h'eels9 of the second'pair of blocks of the chain attachment link.

An oblong platelO is spot welded at four points 11 to the bucket and is formed with said heels being thereof with relation to I,

sloping corner flanges 12 upon its longer relatively narrow elongated 13 connectingsaid corner said flanges 13 being also edges and with sloping flanges flanges in pairs, formed along the flanges.

The plate 10 is slotted inwardly from its ends along-the lineslt whereby to form the diametrically opposed spring tongues 15, 15, each of which is formed with a reduced eX- tension or finger 16 that extends substantially beyond the plate endsprope'r. The tongues 15 may be bent readily, by hand, laterally with respect to the plates.

longer, edges of the plate and upon the same side thereof as the corner The plate10 is designed for sliding and reg leasable' locking engagement With the blocks 5, 6 of the chain attachment links.

The flanges 12 are shaped to correspond to and receive the blocks 5, 6. The plate is slid endwise into engagement with said blocks until it, and the bucket, assumes the position shown in Fig. 1. It is now possible to manually press the spring tongues toward the webs 3, 3, the fingers 16 riding between the heels 9and the tonguesbetween the blocks with the end edges of the tongues abutting the heels so that accidental removal of the plate laterally is impossible due to this abutment of the tongues with said heels. The

plate and bucket are now locked in engagethem it is but necessary to bend back the ton ues until they will clear the heels and withdraw the plate and bucket.

What is claimed is 1. In a bucket elevator, attachment links, spaced blocks integral therewith, heels carried by said blocks and spaced apart, plates secured to said buckets and formed with flanges for telescopic engagement with said blocks, tongues integral with said plates for disposal between said blocks and abutment with said heels, and fingers terminating said jlongues for removable disposed between said eels.

2. In a bucket elevator, attachment links, spaced blocks integral therewith, heels carried. by said blocks and spaced apart, plates spot welded to said buckets and formed with corner flanges and intermediate connecting flanges for sliding engagement with said blocks, spring tongues integral with said plates for disposal between said blocks and abutment with said heels, and lingers terminating said. tongues for disposal between said heels, said fingers projecting beyond: the plate ends.

3.. In a bucket elevator, attachment links, spaced blocks integral. therewith, heels carried by said blocks and spaced apart, plates secured to said buckets and formed with flanges for telescopic engagement with said blocks, and yieldingly adjustable manually operable means integral with said plates for disposal between said blocks and abutment with said heels whereby said plates and blocks may be releasably locked in engaged positions.

4; In a bucket elevator, attachment links, spaced blocks integral therewith, heels carried by said blocks and spaced apart, plates secured to said buckets and formed with flanges for telescopic engagement with said blocks, and yieldingly adjustable manually operable means carried by said plates for disposal between said blocks and abutment with said heels whereby said plates and blocks may be releasably locked in telescoped positions.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature.

PETER S. ERIKSON. 

